Enhancement and control of switched phase conjugate reflectivity in a BaTiO/sub 3/ crystal
CLEO/Pacific Rim 2003. The 5th Pacific Rim Conference on Lasers and Electro-Optics (IEEE Cat. No.03TH8671)(2003)
摘要
When a pulsed backward pump beam (pulse width/spl sim/1 sec) with a suitable time period (e.g., T=90 sec) is irradiated as a reading beam on a steady-state transmission grating in a BaTiO/sub 3/ crystal, with a degenerate four-wave mixing geometry, the switched value of the phase-conjugate reflectivity can be increased by some factors of magnitude over the initial value under a suitable condition. A maximum of the enhanced reflectivity can be controlled by adjusting the interacting beam powers. An increase in the diffraction efficiency is also found with the same read-out process, which plays a key role to this unusual enhancement of the phase-conjugate reflectivity as our knowledge.
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关键词
diffraction gratings,reflectivity
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